diff --git a/src/android/com/github/nkzawa/emitter/Emitter.java b/src/android/com/github/nkzawa/emitter/Emitter.java
index a681dd4..66d6d3b 100644
--- a/src/android/com/github/nkzawa/emitter/Emitter.java
+++ b/src/android/com/github/nkzawa/emitter/Emitter.java
@@ -114,7 +114,7 @@ public Emitter emit(String event, Object... args) {
         ConcurrentLinkedQueue<Listener> callbacks = this.callbacks.get(event);
         if (callbacks != null) {
             for (Listener fn : callbacks) {
-                fn.call(args);
+                fn.call(event, args);
             }
         }
         return this;
@@ -145,7 +145,7 @@ public boolean hasListeners(String event) {
 
     public static interface Listener {
 
-        public void call(Object... args);
+        public void call(String event, Object... args);
     }
 
     private class OnceListener implements Listener {
@@ -161,7 +161,7 @@ public OnceListener(String event, Listener fn) {
         @Override
         public void call(Object... args) {
             Emitter.this.off(this.event, this);
-            this.fn.call(args);
+            this.fn.call(this.event, args);
         }
     }
 }